Water-tube boiler.



No. 774,564. PATENTED NOV. 8', 1904 J. M. GOLMA'N.

WATER TUBE BOILER.

APPLICATION FILED FEB. 20, 1904.

no MODEL. 4 SHEETS-SHEET 1.

WITNESSES; //v VENTOH CTQ Jamea'JZ. (lmazz/ A TTOHNE PATENTED NOV. 8, 1904.

M. GOLMAN. WATER TUBE BOILER.

APPLICATION FILED FEB. 20, 1904. N0 MODEL. v 4 SHEETS-SHEET 2- I E- awnwsssgs.- INVENTOH ma m4 dmes M6IUZ77ZQ7L CL BY No. 774,564. PATENTED NOV. 8, 1904.

' J. M. COLMAN. I

WATER TUB-E BOILER.

APPLICATION FILED FEB 20, 1904.

N0 MODEL. 4 SHEETS-SHEET 3.

WITNESSES: INVENTOP (I7 varies M'C'aZman (2 By W A TTOH/VE Y8 No. 774,564. PATENTED NOV. 8, 1904.

J. M. GOLMAN.

WATER TUBE BOILBR..

APPLICATION FILED FEB. 20, 1904.

N0 MODEL. 7 v I 4 SHEETS-BHEET 4' WITNESSES." INVENTOI? CMZW- V Jim JLCToZman Patented November 8, 1904 JAMES MORTON COLMAN, OF PORT TOWNSEND, WASHINGTON.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 774,564, dated November 8, 1904. Application filed February 20; 1904. Serial No, 194,491. (No model.)

To all whom, it may concern:

Further objects of my invention will ap pear in the course of the subjoined description.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indi-' cate corresponding parts in all the figures;

Figure 1 is a front view of my improved boiler with parts of the casing removed in order to show interior construction; Fig. 2 is a side View of the same, also showing interior construction. Fig. 3 is a rear view, and Fig. 1 is 'a sectional view on the line 4 f of Fig. 2.

In the drawings, 1 representsa foundation of any desired construction.

2 represents a series of water-pipes laid in cement upon the foundation to keep the heat from unduly heating the foundation parts and burning out the timbers, and above the waterpipes is a layer of brick 3, which forms the bottom of the ash-pits 5. Columns 4 extend upwardly from the foundation for supporting the parts, as will be seen. In the ash-pits are placed shaking-grates 6.

7 is a cast-iron arch for the fire-doorway, and 8 is a division-wall between the furnaces, which supports upon its top a pipe 9 for the admission of air to support combustion.

10 is a cast-iron furnace front.

11 is a lower header, and 12 an outside casing provided with an asbestos lining 13. This casing is provided with longitudinal seams 14: on the outside, arranged for easy access in case of repairs, and it is also provided with a series of holes 15, through which the soot may be blown out. Each hole has a short piece of tube expanded into it and projecting outresented at 19.'

wardly. A cap is secured to the end of the tube and has to be removed when the soot is blown out. Side tubes 16 are provided extending along each side of the boiler, as shown. Within the casing are stationed a plurality of headers 17, arranged in tiers at the front and back of the boiler. These headers and side tubes are joined together by short tubes 18, as shown. The water-tubes of the boiler are rep- They extend into the headers by being bent at their ends 20, as shown in Fig. 2. These headers are also provided with manholes 21. Upon the top of the boiler is a steam-dome 22, provided with a manhole 23 and connected to the parts below by the passages 2a and 25. This dome is provided with ports 26 for connection with the external piping.

27 is the top of the uptake and Smokestack.

The watertubes run from back to front and are expanded into theheadersin the same manner that tubes are secured in a shell-boiler. The headers and side pipes are of the same size and large enough to permit a workman to go inside for'the purpose of repairing the parts and are provided with longitudinal riveted seams 28 29.

It willbe'seen froman examination of this construction that a very compact and strong boiler is obtained; that no stay-bolts are necessary and no threaded joints; that there are no hand-holes, and that the boiler carries a greater quantity of water than the forms heretofore known, thereby securing more steady steam; that complete and ready access is secured to every part of the boiler for cleaning and repairing; that perfect facility is obtained for separating water from steam, thereby insuring economy; that the circulation is ample to carry off all steam, there being a very large area in the circulation parts; that a large grate area may be obtained to burn any kind of fuel; that no special fittings are required that must be obtained from a manufacturer, so that any boiler-maker can repair the parts, and that perfect facilities for blowing out soot are secured.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a water-tube boiler, the combination of a series of headers, water-tubes secured thereto, a steam-dome above the same communicating with one of said headers, means 1 tubes extending into the walls of said head- I ers, a series of side tubes each communicating with the ends of two of said headers, and a steam-dome communicating with one of said headers.

3. In a boiler, the combination of a series of water-tubes, a series of headers circular in cross-section,said tubes extendinginaslightlyinclined direction being bent at their ends and passing radially through the side walls of two of said headers, and a steam-dome communieating with one of said headers.

4:. In a boiler, the combination of a plurality of headers at each end of the boiler, a plurality of side pipes each connecting two of said headers and substantially the size of said headers, .tubes connecting each of said headers to another header and each of said side pipes to another side pipe, and a steam-dome connected to one of said headers.

5. A boiler comprising a header at each end thereof, and a transverse side pipe connecting the ends of said headers.

6. A boiler comprising a plurality of parallel headers at each end thereof, and a plurality of side pipes connecting said headers.

'7. A boiler comprising a plurality of parallel headers at each end thereof, a plurality of side pipes connecting said headers, and a series of water-tubes between the side pipes and entering the headers.

8. A boiler comprising a casing, a series of headers therein running parallel to the casing,

and means for blowing out soot, said means being located between said headers in the walls of said casing.

9. A boiler comprising a vertical series of headers, watertubes, side pipes and a steamdome in communication with said headers and located parallel therewith.

10. A boiler comprising a series of headers on each end thereof, the headers of one series being slightly above those of the other, tubes connecting the headers of each series, and a steam-dome connected directly withthe highest header.

11. In a water-tube boiler, the combination of a series of headers, water-tubes connected thereto, a steam-dome above and comm unicating with one of said headers, means for permitting circulation from each of said headers to the others, said means comprising transverse parallel side pipes of substantially the size of said headers, and means for heating the headers and the water-tubes.

12. In a water-tube boiler, the combination of a series of headers on each end of the boiler, watertubes connected to said headers, a series of parallel side pipes each connected to headers at its ends, and means for heating said elements.

13. In a boiler, the combination of a series of headers at each end of the boiler, the headers of one series being slightly above those of the other series, and a series of parallel watertubes extending in a slightly-inclined direction and having bent ends passing radially through the side walls of a header of each series.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

J AMES MORTON COLMAN.

Witnesses:

U. B. SALLEY, F. W. GURRIE. 

